Thoughts on tools capable of that?

- Xojo is a commercial tool which I believe does that (but with a price and license to match)

- MoonBasic seems like a promising start

- Gambas for folks using Linux?

- For folks using the very affordable PureBasic there is the matching (also commercial, just about as affordable) SpiderBasic

Naturally if one extends the search to other languages there are lots of options, but Lazarus with a .js Object Pascal compiler seems worth mentioning. For my part, I was swayed when flet.dev announced their v1.0 and so went the Python route....

You can export apps as single page html, more original exports are on the works but it more complex.

FWIW, the File menu has a command to export the program as a self-contained HTML file.

Have you tried File → Make [ProjectName].html...?

This would be awesome